[2] In 2017 Højgaard received further recognition at the boys level by representing Continental Europe in the Jacques Léglise Trophy.

In June he won the individual competition for the boys Toyota Junior Golf World Cup, four strokes ahead of his brother Nicolai.

[5] In September he was part of the Danish team that won the 2018 Eisenhower Trophy for the first time and he played for Europe in the Junior Ryder Cup later in the month.

[6][7] In December 2019, Højgaard won the AfrAsia Bank Mauritius Open, the second event of the season, winning a three-man playoff against Renato Paratore and Antoine Rozner at the third extra hole.

In August 2020, Højgaard won the ISPS Handa UK Championship in a playoff over Justin Walters for his second European Tour win.

[13] Højgaard's twin brother Nicolai is a professional golfer and was also part of the Danish team that won the 2018 Eisenhower Trophy.